<template>
  <div class="container">
    <div class="main">
      <div class="pay-title">
        支付总金额 <span class="pay-price">￥ {{info.price}}</span>
      </div>
      <div class="pay-main">
        <h4>微信支付</h4>
        <el-row type="flex"
                justify="space-between"
                align="middle"
                class="pay-qrcode">
          <div class="qrcode">
            <!-- 二维码 -->
            <canvas id="qrcode-stage"></canvas>
            <p>请使用微信扫一扫</p>
            <p>扫描二维码支付</p>
          </div>
          <div class="pay-example">
            <img src="http://157.122.54.189:9093/images/wx-sweep2.jpg"
                 alt="">
          </div>
        </el-row>
      </div>
    </div>
  </div>
</template>

<script>
import QRCode from "qrcode";
export default {
  data () {
    return {
      info: {}
    }
  },
  mounted () {
    // 这个处理方法是有缺陷的，不100%准确
    // userInfo在页面加载完才赋值
    const id = this.$route.query.id;
    console.log(id)
    setTimeout(() => {
      this.$axios({
        url: '/airorders/' + id,
        headers: {
          Authorization: `Bearer ${this.$store.state.user.userInfo.token}`
        }
      }).then((res) => {
        console.log(res)
        this.info = res.data;
        const { payInfo } = res.data;
        // 生成二维码到canvas
        const stage = document.querySelector("#qrcode-stage");
        QRCode.toCanvas(stage, payInfo.code_url, {
          width: 200
        });
        // 查询状态
      this.time = setInterval(async v => {
          const pay = await this.isPay(this.info);
          if(pay){
           clearInterval(this.time);
           return;
          }
        }, 3000);
      
      });
    }, 100)

  },
  methods:{
    isPay (data){
     return this.$axios({
        method: 'post',
        url: '/airorders/checkpay',
        data: {
          id: data.id,
          nonce_str: data.price,
          out_trade_no: data.orderNo
        },
                headers: {
          Authorization: `Bearer ${this.$store.state.user.userInfo.token}`
        }
      }).then((res) =>{
        console.log(res);
      })
    }
  }
}
</script>

<style scoped lang="less">
.container {
  background: #f5f5f5;
  padding: 30px 0;
  height: 800px;

  .main {
    width: 1000px;
    margin: 0 auto;

    .pay-title {
      text-align: right;
      span {
        font-size: 28px;
        color: orangered;
      }
    }

    .pay-main {
      background: #fff;
      margin-top: 10px;
      border-top: 5px orange solid;
      padding: 30px;

      h4 {
        font-size: 28px;
        font-weight: normal;
        margin-bottom: 10px;
      }

      .pay-qrcode {
        padding: 0 80px;
      }

      .qrcode {
        border: 1px #ddd solid;
        padding: 15px;
        height: fit-content;

        #qrcode-stage {
          width: 200px;
          height: 200px;
          margin-bottom: 10px;
        }

        p {
          line-height: 2;
          text-align: center;
        }
      }
    }
  }
}
</style>